CN104834420A - Conductive glass for capacitive touch screen and preparation process thereof - Google Patents
Conductive glass for capacitive touch screen and preparation process thereof Download PDFInfo
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- CN104834420A CN104834420A CN201510178994.0A CN201510178994A CN104834420A CN 104834420 A CN104834420 A CN 104834420A CN 201510178994 A CN201510178994 A CN 201510178994A CN 104834420 A CN104834420 A CN 104834420A
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Abstract
The present invention discloses conductive glass for a capacitive touch screen and a preparation process thereof. The conducting glass comprises a glass substrate, wherein the upper surface of the glass substrate is provided with a first ink layer, a first shadow eliminating layer and a conductive film layer in a laminating manner along the thickness direction. The conductive glass also comprises a second shadow eliminating layer arranged at the lower surface of the glass substrate. The ink used on the first ink layer is acid-resistant, alkali-resistant, high temperature-resistant and insulted ink, and a conductive circuit for image display is etched on the conductive film layer. Shadow eliminating layers are plated at two sides of the glass substrate, so the etching shadow of the conductive layer in a window of the touch screen is invisible under visible light. The transmittance of the visible light is improved by 0.5-2%, and an ink layer which is not more than 5 micrometers is plated on one side surface of the glass substrate, so finally, when the touch screen and a display are fitted, the fitting ratio can be up to more than 90%. Meanwhile, the preparation process is simple and easy to implement.
Description
Technical field
the present invention relates to electro-conductive glass technical field, particularly a kind of capacitance touch screen electro-conductive glass and preparation technology thereof.
Background technology
at present, capacitance touch screen is widely used in all kinds ofly needing in the electronic product of human-computer interaction terminal, and electro-conductive glass is its main devices, electro-conductive glass especially double-sided coating electro-conductive glass aspect of performance require comparatively strict, such as homogeneity, heat resistance, acid-proof alkaline, high-temp resisting high-humidity resisting performance etc., the manufacturing process that traditional electro-conductive glass mainly adopts " glass+glass ", by first piece successively through finishing impression, tempering, silk-screen, baking; Second sheet glass is successively through plated film, silk-screen, baking, etching, and the protection that then being carried out by two sheet glass fits realizes touch-screen and touch sense function, technique is more complicated, and attaching process yield difficulty is controlled.And at present; the OGS coating process adopted; only need a sheet glass can complete protection and the contact sensing functions of touch-screen; its technique generally adopts a sheet glass obtained after finishing impression, tempering, plated film, silk-screen, baking, etching successively; in the process; when making circuit; because processing technology difficulty increases; acid etch circuit is commonly used when making circuit; in etching process; easily etch away the part that should not etch, and easily there is the erosion trace track of circuit etch, affect its electromagnetic screen, electrostatic protection function.
Summary of the invention
an object of the present invention is to provide a kind of capacitance touch screen electro-conductive glass for the deficiencies in the prior art part.
for achieving the above object, the technical solution used in the present invention is: a kind of capacitance touch screen electro-conductive glass, described electro-conductive glass comprises glass substrate, the upper surface of described glass substrate to disappear shadow layer, conductive film layer along its thickness direction sequentially laminated with the first ink layer, first, described electro-conductive glass also comprises to be located at second on described glass substrate lower surface and to disappear shadow layer, described first ink layer ink used be acid and alkali-resistance, high temperature resistant, insulation ink, described conductive film layer is also etched with display image conducting wire.
preferably, the described first shadow layer that disappears comprises the Nb stacked gradually on described first ink layer upper surface
2
o
5
rete, a SiO
2
rete, the described second shadow layer that disappears comprises the 2nd Nb stacked gradually on described glass substrate lower surface
2
o
5
rete, the 2nd SiO
2
rete.
further preferably, a described Nb
2
o
5
rete, a described SiO
2
rete, described 2nd Nb
2
o
5
rete, described 2nd SiO
2
in rete and described conductive film layer, the thickness of each rete is all between 45 ~ 55nm.
preferably, the thickness of described first ink layer is no more than 5 μm.
preferably, described conductive film layer is ITO conductive film layer.
another object of the present invention is to provide a kind of preparation technology for the preparation of above-mentioned capacitance touch screen electro-conductive glass, comprises the steps:
1) making of glass substrate, carries out finishing impression, tempering process, obtains required glass substrate by monolithic glass;
2) silk-screen, on the upper surface of above-mentioned glass substrate silk-screen one deck acid and alkali-resistance, high temperature resistant, insulation ink, after solidification described first ink layer;
3) plate described first successively at the upper surface of described first ink layer to disappear shadow layer, described conductive film layer, the lower surface of described glass substrate plates described second and to disappear shadow layer;
4) etching conductive circuit on described conductive film layer, obtains the electro-conductive glass of capacitance touch screen.
preferably, gold-tinted etch process is adopted to etch required conducting wire in described step 4) on described conductive film layer.
preferably, etching processing method in described step 4) is as follows: adopt acidproof not alkaline-resisting ink on the upper surface of described conductive film layer, draw out required conducting wire figure, then this glass substrate can be completed successively after overpickling, alkali cleaning the etching processing to described conductive film layer.
preferably, disappear shadow layer, the described conductive film layer of shadow layer, described second that disappear of described first in step 3) is all adopt magnetron sputtering plating to be shaped.
due to the utilization of technique scheme, the present invention compared with prior art has following advantages: capacitance touch screen electro-conductive glass of the present invention, and which employs and to disappear shadow layer at the equal plating in the both sides of glass substrate, this shadow layer that disappears comprises the Nb of stacked setting
2
o
5
rete, SiO
2
rete, make visible ray lower conductiving layer etching shade in form invisible, visible light transmissivity improves 0.5%-2%, and the ink layer being no more than 5 microns of glass substrate one side plating, make final touch-screen when fitting with display, its laminating rate can reach more than 90%, and meanwhile, this preparation technology is simple, easy to implement.
Accompanying drawing explanation
accompanying drawing 1 is the structural representation of described capacitance touch screen electro-conductive glass of the present invention;
wherein: 1, glass substrate; 2, the first ink layer; 3, a Nb
2
o
5
rete; 4, a SiO
2
rete; 5, conductive film layer; 6, the 2nd Nb
2
o
5
rete; 7, the 2nd SiO
2
rete.
Embodiment
below in conjunction with drawings and the specific embodiments, technical scheme of the present invention is further elaborated.
shown in Figure 1, a kind of capacitance touch screen electro-conductive glass, this electro-conductive glass comprises glass substrate 1, and the upper surface of described glass substrate 1 stacks gradually along its thickness direction and is provided with the first ink layer 2, first and disappears shadow layer, conductive film layer 5, and the lower surface of this glass substrate 1 is provided with second and disappears shadow layer.This first ink layer 2 ink used is the ink of acid and alkali-resistance, high temperature resistant, insulation, this conductive film layer 5 is also etched with the conducting wire of display image.Here conductive film layer 5 is ITO conductive film layer 5.
in the present embodiment, this first shadow layer that disappears comprises the Nb stacked gradually on the first ink layer 2 upper surface
2
o
5
rete 3, a SiO
2
rete 4, this second shadow layer that disappears comprises the 2nd Nb stacked gradually on glass substrate 1 lower surface
2
o
5
rete 6, the 2nd SiO
2
rete 7.And the thickness of this first ink layer 2 is no more than 5 μm, a Nb
2
o
5
rete 3, a SiO
2
rete 4, the 2nd Nb
2
o
5
rete 6, the 2nd SiO
2
in rete 7 and ITO conductive film layer 5, the thickness of each rete is all between 45 ~ 55nm.Thus make the touch-screen ultrathin finally made.
the preparation technology of this capacitance touch screen electro-conductive glass, comprises the steps:
1) making of glass substrate 1, carries out finishing impression, tempering process by monolithic glass, obtain required glass substrate 1;
2) silk-screen, on the upper surface of above-mentioned glass substrate 1 silk-screen one deck acid and alkali-resistance, high temperature resistant, insulation ink, after baking-curing the first ink layer 2, the thickness of this first ink layer 2 is no more than 5 μm;
3) magnetron sputtering technique is adopted, in vacuum coating equipment, magnetic control sputtering plating the one Nb successively on the upper surface of this first ink layer 2
2
o
5
rete 3, a SiO
2
rete 4, magnetic control sputtering plating the 2nd Nb successively on the lower surface of glass substrate 1
2
o
5
rete 6, the 2nd SiO
2
rete 7, then carries out being baked to each rete disappeared in shadow layer and dries, then at a SiO
2
plating ITO conductive film layer 5 on the upper surface of rete 4;
4) etching conductive circuit on this ITO conductive film layer 5, obtains the electro-conductive glass of capacitance touch screen.
here, in step 3), in same vacuum coating equipment, sputter can be carried out to the upper surface of the first ink layer 2, the lower surface of glass substrate 1 to disappear shadow layer simultaneously, realize double-sided coating once-forming, decrease processing step, decrease Equipments Setting simultaneously and saved production space, effectively reducing the use amount of plated film consumptive material simultaneously.
here, required conducting wire can be etched by gold-tinted etch process on this ITO conductive film layer 5 in step 4).Certainly also undertaken etching conducting wire by following method: adopt acidproof not alkaline-resisting ink to draw out required conducting wire figure at the upper surface of this ITO conductive film layer 5, then this electro-conductive glass is placed in concentration be 10% hydrochloric acid solution carry out pickling, by pickling by this ITO conductive film layer 5 not by ink cover partially-etched fall; After to be etched, then this electro-conductive glass is placed in concentration be 10% sodium hydroxide solution carry out alkali cleaning, dissolved by this acidproof not alkaline-resisting ink by alkali cleaning, namely the electro-conductive glass of gained can be used for making capacitance touch screen.
by the electro-conductive glass that said method is obtained, its transmitance (550nm wavelength) is>=88.5%, and its reflectivity obviously reduces, and the capacitance touch screen that have employed this electro-conductive glass improves the shadow effect that disappears while ultrathin.And employing first then carries out plated film again at glass baseplate surface silk-screen one deck acid and alkali-resistance, ink layer that is high temperature resistant, insulation, make the touch-screen finally made when fitting with display, its laminating rate can reach more than 90%.
above-described embodiment is only for illustrating technical conceive of the present invention and feature; its object is to person skilled in the art can be understood content of the present invention and be implemented; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (9)
1. a capacitance touch screen electro-conductive glass, it is characterized in that: described electro-conductive glass comprises glass substrate, the upper surface of described glass substrate to disappear shadow layer, conductive film layer along its thickness direction sequentially laminated with the first ink layer, first, described electro-conductive glass also comprises to be located at second on described glass substrate lower surface and to disappear shadow layer, described first ink layer ink used be acid and alkali-resistance, high temperature resistant, insulation ink, described conductive film layer is also etched with display image conducting wire.
2. capacitance touch screen electro-conductive glass according to claim 1, is characterized in that: the described first shadow layer that disappears comprises the Nb stacked gradually on described first ink layer upper surface
2o
5rete, a SiO
2rete, the described second shadow layer that disappears comprises the 2nd Nb stacked gradually on described glass substrate lower surface
2o
5rete, the 2nd SiO
2rete.
3. capacitance touch screen electro-conductive glass according to claim 2, is characterized in that: a described Nb
2o
5rete, a described SiO
2rete, described 2nd Nb
2o
5rete, described 2nd SiO
2in rete and described conductive film layer, the thickness of each rete is all between 45 ~ 55nm.
4. capacitance plate touch electro-conductive glass according to claim 1, is characterized in that: the thickness of described first ink layer is no more than 5 μm.
5. capacitance touch screen electro-conductive glass according to claim 1, is characterized in that: described conductive film layer is ITO conductive film layer.
6., for the preparation of a preparation technology for the arbitrary described capacitance touch screen electro-conductive glass of claim 1 to 5, it is characterized in that, comprise the steps:
1) making of glass substrate, carries out finishing impression, tempering process, obtains required glass substrate by monolithic glass;
2) silk-screen, on the upper surface of above-mentioned glass substrate silk-screen one deck acid and alkali-resistance, high temperature resistant, insulation ink, after solidification described first ink layer;
3) plate described first successively at the upper surface of described first ink layer to disappear shadow layer, described conductive film layer, the lower surface of described glass substrate plates described second and to disappear shadow layer;
4) etching conductive circuit on described conductive film layer, obtains the electro-conductive glass of capacitance touch screen.
7. the preparation technology of capacitance touch screen electro-conductive glass according to claim 6, is characterized in that: adopt gold-tinted etch process to etch required conducting wire in described step 4) on described conductive film layer.
8. the preparation technology of capacitance touch screen electro-conductive glass according to claim 6, it is characterized in that, etching processing method in described step 4) is as follows: adopt acidproof not alkaline-resisting ink on the upper surface of described conductive film layer, draw out required conducting wire figure, then this glass substrate can be completed successively after overpickling, alkali cleaning the etching processing to described conductive film layer.
9. the preparation technology of capacitance touch screen electro-conductive glass according to claim 6, is characterized in that: disappear shadow layer, the described conductive film layer of shadow layer, described second that disappear of described first in step 3) is all adopt magnetron sputtering plating to be shaped.
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|---|---|---|---|
| CN201510178994.0A CN104834420B (en) | 2015-04-16 | 2015-04-16 | A kind of capacitance touch screen electro-conductive glass and its preparation technology |
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|---|---|---|---|
| CN201510178994.0A CN104834420B (en) | 2015-04-16 | 2015-04-16 | A kind of capacitance touch screen electro-conductive glass and its preparation technology |
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| CN104834420B CN104834420B (en) | 2018-01-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106484193A (en) * | 2016-12-22 | 2017-03-08 | 信利光电股份有限公司 | A kind of capacitive touch screen |
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| US20100225227A1 (en) * | 2006-11-17 | 2010-09-09 | Svetoslav Tchakarov | Electrode for an organic light-emitting device, acid etching thereof and also organic light-emitting device incorporating it |
| CN103092416A (en) * | 2013-01-18 | 2013-05-08 | 深圳市正星光电技术有限公司 | Shadow-removing high transmittance glass for one glass solution (OGS) and manufacturing method thereof |
| CN103412696A (en) * | 2013-07-23 | 2013-11-27 | 江苏汇银光电科技有限公司 | Method for manufacturing single-substrate capacitive touch screen |
| CN104049824A (en) * | 2014-06-25 | 2014-09-17 | 向火平 | Projection-type capacitance screen and manufacturing method of projection-type capacitance screen |
| CN104498882A (en) * | 2014-11-26 | 2015-04-08 | 安徽立光电子材料股份有限公司 | Method for coating varnishing layer and ITO layer on ink printed glass |
-
2015
- 2015-04-16 CN CN201510178994.0A patent/CN104834420B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100225227A1 (en) * | 2006-11-17 | 2010-09-09 | Svetoslav Tchakarov | Electrode for an organic light-emitting device, acid etching thereof and also organic light-emitting device incorporating it |
| CN103092416A (en) * | 2013-01-18 | 2013-05-08 | 深圳市正星光电技术有限公司 | Shadow-removing high transmittance glass for one glass solution (OGS) and manufacturing method thereof |
| CN103412696A (en) * | 2013-07-23 | 2013-11-27 | 江苏汇银光电科技有限公司 | Method for manufacturing single-substrate capacitive touch screen |
| CN104049824A (en) * | 2014-06-25 | 2014-09-17 | 向火平 | Projection-type capacitance screen and manufacturing method of projection-type capacitance screen |
| CN104498882A (en) * | 2014-11-26 | 2015-04-08 | 安徽立光电子材料股份有限公司 | Method for coating varnishing layer and ITO layer on ink printed glass |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106484193A (en) * | 2016-12-22 | 2017-03-08 | 信利光电股份有限公司 | A kind of capacitive touch screen |
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| CN104834420B (en) | 2018-01-09 |
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Effective date of registration: 20191120 Address after: 215623 No. 5 Changhong Road, Changyinsha Modern Agricultural Demonstration Park, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: Zhangjiagang Herui Chuangxian Intelligent Optics Co., Ltd. Address before: Modern agricultural demonstration park in Zhangjiagang city of Suzhou City, Jiangsu province 215623 South Road community often Changhong Patentee before: ZHANGJIAGANG MINGSITE PHOTOELECTRIC SCIENCE & TECHNOLOGY CO., LTD. |